jleetutorial
Error docker run from Dockerfile
I have an error running docker container, i don't have much experience using Docker and redis that is why i open this issue to ask for help
Traceback (most recent call last): File "/usr/local/lib/python3.5/site-packages/redis/connection.py", line 439, in connect sock = self._connect() File "/usr/local/lib/python3.5/site-packages/redis/connection.py", line 464, in _connect socket.SOCK_STREAM): File "/usr/local/lib/python3.5/socket.py", line 733, in getaddrinfo for res in _socket.getaddrinfo(host, port, family, type, proto, flags): socket.gaierror: [Errno -2] Name or service not known
During handling of the above exception, another exception occurred:
Traceback (most recent call last): File "/usr/local/lib/python3.5/site-packages/redis/client.py", line 572, in execute_command connection.send_command(*args) File "/usr/local/lib/python3.5/site-packages/redis/connection.py", line 563, in send_command self.send_packed_command(self.pack_command(*args)) File "/usr/local/lib/python3.5/site-packages/redis/connection.py", line 538, in send_packed_command self.connect() File "/usr/local/lib/python3.5/site-packages/redis/connection.py", line 442, in connect raise ConnectionError(self._error_message(e)) redis.exceptions.ConnectionError: Error -2 connecting to redis:6379. Name or service not known.
During handling of the above exception, another exception occurred:
Traceback (most recent call last): File "/usr/local/lib/python3.5/site-packages/redis/connection.py", line 439, in connect sock = self._connect() File "/usr/local/lib/python3.5/site-packages/redis/connection.py", line 464, in _connect socket.SOCK_STREAM): File "/usr/local/lib/python3.5/socket.py", line 733, in getaddrinfo for res in _socket.getaddrinfo(host, port, family, type, proto, flags): socket.gaierror: [Errno -2] Name or service not known
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "app.py", line 7, in
This error is because we need to link the container running the app with a redis container
I have attached the screenshots and three files as suggested
template has
app.py contains
from flask import Flask, request, render_template app = Flask(name) default_key = '1' cache = {default_key: "one"}
@app.route('/', methods=['GET', 'POST']) def mainpage():
key = default_key if 'key' in request.form: key = request.form['key']
if request.method == 'POST' and request.form['submit'] == 'save': cache.set(key, request.form['cache_value'])
cache_value = None; if cache.get(key): cache_value = cache.get(key).decode('utf-8')
return render_template('index.html', key=key, cache_value=cache_value)
if name == 'main': app.run(host='0.0.0.0')
Dockerfile contains
FROM python:3.5 RUN pip install Flask==0.11.1 RUN useradd -ms /bin/bash admin USER admin COPY app /app WORKDIR /app CMD ["python", "app.py"]
When I go to the browser and hit my localhost which is 192.168.0.101:5000, it says
"The Internal Server Error
The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application."
What is the solution?
